Restructuring and Related Activities (Tables)

3 Months Ended

Mar. 31, 2021

Restructuring and Related Activities [Abstract]

Restructuring and Related Costs

Restructuring and Other Costs, Before Tax
	Incurred in the Three Months Ended March 31, 2021		Cumulative Incurred Through March 31, 2021		Total Amount Expected to be Incurred
Severance benefits	$	—	$	73	$	73
IT costs	2		4		27
Professional fees and other expenses	9		38		64
Total restructuring and other costs, before tax	$	11	$	115	$	164

Schedule of Restructuring Reserve by Type of Cost

Accrued Restructuring and Other Costs
	Three Months Ended March 31, 2021
	Severance Benefits and Related Costs		IT Costs		Professional Fees and Other		Total Restructuring and Other Costs Liability
Balance, beginning of period	$	54	$	—	$	—	$	54
Incurred	—		2		9		11
Payments	(6)		(2)		(6)		(14)
Balance, end of period	$	48	$	—	$	3	$	51